Undoubtedly, we recognize it because of our tool-manipulating nature.
毋庸置疑,我們之所以知道是因為我們使用工具的天性。
?? 牛津釋義
because of
prep by reason of (sb/sth); on account of [];
They are here because of us. .
He walked slowly because of his bad leg. .
Because of his wife('s) being there, I said nothing about it. , .